Leather-staking machine.



No. 722,461. P'ATENTED MAR. 10, 1903. F. F. SLOGOMB & J. GRAIG.

LEATHER STAKING MACHINE.

APPLICATION FILED SEPT. 20, 1899.

N0 MODEL. 3 SHEETSSHEET 1.

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3 SHEETSSHEET 2.:

APPLICATION FILED'BEPT. 20, 1899.

10 MODEL.

r1 IJN No. 722,461. PATENTED MAR. 10, 1903. F. P. SLOGOMB & J. CRAIG.

LEATHER STAKINGrv MACHINE.

APPLICATION IILED SEPT. 20, 1899.

3 SHEETS-SHEET 3.

N0 MODEL.

IIII witn cone-o U ITED STATES PATENT FFICE.

FRANK F. SLOCOMB AND JAMES CRAIG, OF-WILMINGTON, DELAWVARE.

LEATHER-STAKING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 722,461, dated March 10, 1903. Application filed September 20, 1899. Serial No. 731,05 (No model.)

To all whom it may concern.-

Be it known that we,FRANK F. Smooth; and JAMES CRAIG, citizens of the United States, residing at "Wilmington, in the county of Newcastle, State of Delaware, haveinvented a new and useful Improvement in Leather-Staking Machines, which improvement is fully set forth in the following specification and accompanying drawings.

Our invention relates to improvements in leather-staking machines; and it consists,

first, of means whereby we effect an accelerated speed of the staking-jaws and their supports during their reverse motion, at the same time dispensing with the connectingrod heretofore employed in machines of this class; second, of novel mechanism for opening and closing the staking appliances at the proper intervals; third, of the employment of two blades, the outer one being adjustable or tilting with reference to the roll or other device carried by the opposite jaw or with relation to the line of motion of said blade;-

fourth, of novel mechanism for effecting a lateral adjustment of the lower jaw and the staking-knives carried thereby; fifth, of a novel construction of the frictionalbreastpad; sixth, of novel details of construction, all as will be hereinafter fully set forth, and particularly pointed out in the claims.

Figure 1 represents a plan view of a leatherstakiug machine embodying our invention. Fig. 2 represents a side elevation of the machine. Fig. 3 represents a front elevation of Fig. 2. Fig. 4: represents a partial plan view and partial horizontal section of certain of the parts seen in Fig. 2, the section being taken on the line w w in said Fig. 2. Fig. 5 represents a partial plan View and partial horizontal section of certain parts seen in Fig. 3, the section being taken on line y y thereof. e Fig. 6 represents a partial side elevation and partial vertical section of certain detached portions of the machine, the section being taken on line 2 2, Fig. 1. Figs. 7 and 8 represent side elevations of detached parts of the machine, a portion of Fig. 8 being in section. Fig. 9 represents a plan view of a portion of Fig. 8. elevation of a modification, the same being on areduced scale. Figs. 11 and 12 represent side elevations of a pivoted knife and its Fig. 10 represents a side adjuncts. Fig. 13 represents a section on line 00 m, Fig. 3. Fig. 14 represents a plan view of the lower jaw. Fig. 15 represents a section on line y y, Fig. 14. -Figs. 16 and '17'represent perspective views of certain detached portions of the machine.

. similar numerals of reference indicate corresponding parts in the figures.

' Referring to the drawings, 1 designates the housing of the machine, and 2 the main driving-shaft journaled therein and provided with thefixed and loose pulleys 3 and 4, re-

spectively.

5 designates a crank-Wheel secured to the shaft 2 and provided with a wrist-pin 6 and a counterbalance 7, as best. seen in Fig. 2.

" 8 designates an oscillatory frame mounted on the shaft 9, which latter is journaled in the frame 1, said frame being adapted to be oscillated by rollers 10, which are carried by the wrist-pin 6 and work in guides or slots 11 in the frame 8.

It will be seen that the wrist-pin 6 and crank-wheel 5 must make considerably more than a half-revolution in'order to carry the frame 8 and its adjuncts from their extreme forward to extreme backward positions and that the reverse or return motion of said frame will be accomplished While said pin and wheel are making much less than a half-revolution. Therefore without decreasing the number of revolutions of the machine We are enabled to .give the staking-tools aslower motion during their pull on the leather. The action of the staking-tools will therefore be more gentle and gradual, giving the leather more time tov stretch, so that not only will the work be improved in quality and the risk of damage lessened, but the operator will be able to shift the work farther after each stroke or take a wider cut, thus increasing the capacity of the machine materially.

The upper end of the oscillatory frame 8 terminates in a jaw 8 forming the upper jaw of the machine and upon which the staking-roller 12 is mounted, said rollerworking in conjunction with the staking-knives 13 and 14, which are secured to-the lower jaw 15, which latter is loosely supported on the shaft 16, journaled in the frame 8, so that said jaw 15 will follow the oscillating motion of the frame 8.

The shaft 16 is provided with a worm-wheel 17, fast on said shaft, which meshes with a worm 18, secured to a shaft 19, which has its bearings in a hanger or bracket 19 which may besupported in any suitable manner.

It is tobe noted that by mounting the shaft 19 so that it can swing in the direction indicated by the arrows a and b in Fig. 8 it must move in unison with the frame 8 when the latter is rocking on the shaft 9.

The lower portion'of the shaft 19 is provided with a frictionally-operable roller 20, fast on said shaft and adapted to contact when desired with the lever 21, which is pivoted to the frame 1, as at 22, wherefrom it willbe seen that the contact of said lever with said roller will rotate the worm 18 to the desired extent, and by reason of the eccentric bearing 18 in the portions 17 of the jaw 15 a backward or forward movement will be imparted to the jaw 15 and the knives carried thereby, according to requirements.

The knives 13 and 14 are secured to the lower jaw 15 in such manner as to be adjustable thereon relatively to the staking-roller 12,s0 that said knives may be moved independently of each other.

23 designates a vibratory cam-frame loosely mounted on the shaft 16, so as to turn thereon, it being noted that said frame 23 is provided with a guide or slot 24, whose upper portion is rectilinear, while its lower portion is curved, as at 25, for a purpose to be hereinafter described.

The upper outer portion of the cam-frame 23 is provided with a seat or shelf 23 upon which the outer .portion 15 of the arm ;15 rests during the operation of the machine.

26 designates a roller carried by the wristpin 6 and adapted to work in the slot 24 in the vibratory cam-frame 23, so as to rock the latter when the machine is in operation, and thereby raise and lower the shelf 23 and the staking-knives 13 and 14 supported thereon.

27 designates torsional springs provided with upwardly-extending members 28, which are in contact with the rear of the oscillatory frame 8 and are designed to support the weight of the said frame when in its lower positions, (shown by dotted lines in Fig. 6,) thus securing an easy recovery at the reversing-point and avoiding the jerk or jar that would otherwise result there at the beginning of the quick-return movement.

30 designates a breast-beam of novel constrnction secured to the forward portion of the frame 1 and against which the skin 29 to be staked is firmly held by the operatorin the usual manner.

We have found it in some instances desirable to make the angle of inclination of one of the knives 13 and 14 adjustable, as will be understood from Fig. 11, when the knife 31 which corresponds to the knife 14, is mounted on the lever 32, which is fulcrumed at 33 and has a threaded stem 34 engaging the lower portion thereof, said stem engaging the union-nut 35, which latter is engaged by the threaded stem 36, which is secured to a suitable fixed point, said stem having right and left threads thereon, wherefrom it will be seen that the rotation of said nut will affect the angle of inclination of the knife 31 toward or away from the knife 13 or the roller 12, according to the requirements on account of the varying textures and substances of the diflerent skins. In Fig. 12 we have shown another form of device for supporting a pivotal knife 3], in which said knife is mounted on a lever 37, which is pivoted to the jaw 15, said lever being held in position by the bolt or screw 38, which passes through the lug 39, said bolt being held in position by the locknut 40, while the spring 41, interposed between said lug and lever, prevents the latter from rattling.

42 designates a resilient knife or scraper, which is adjustably secured in position by the fastening device 43, said resilient scraper having its opposite end 43 deflected upwardly and terminating in proximity to the knife 31, said resilient scraper 42 being located in proximity to the roller 12 and said knife 31 having its edge preferably in advance thereof when the parts are in the position seen in Fig. 12.

44 designates a block or support for the resilient scraper 42, said block resting upon the resilient pad or cushion 45, through which passes the bolt or other fastening device 46, the upper portion of the latter engaging the block 44, wherefrom it will be apparent that the cushion 45 can be more or less compressed, according to requirements, by manipulating the screw 68.

The knife 31 (seen in Fig. 12) is vertically adjustable after properly manipulating the fastening device, being slotted for this purpose in the usual manner, (same as shown in knife 13, Fig. 15,) while the knives 13 and 14 (best seen in Figs. 2, 8, and 14) are adjustable vertically and laterally or toward and away from each other. The preferred means for effecting this adjustment will be understood from Figs. 14 to 17, inclusive, in which the outer extremity of the jaw 15 is provided with a longitudinally-extending recess 47, in which is seated the plates 48, which have the upright member 49, which carries the staking knife 13 or 14, each of said plates 48 having an opening 50 therethrough, through which the bolt or other fastening device 51 passes, said bolt also passing through the opening 52 in the recess 47, whereby it will be seen that the plates 48 and the knifecarriers 49, together with their knives, are capable of adjustment toward and away from each other. Each of the knives 13 or 14 is provided with slots 52 through which pass the fastening devices 53, which engagethe openings 54 in the knife-carrier 49, wherefrom it will be seen that each of the knives 13 and 14 is capable of vertical adjustment, it being understood that the knives 13 and 31 (seen in Fig. 11) are also capable of vertical adjustment and also of being moved toward and away from each other, while the resilient scraper or knife 42 and the pivotal knife 31 (seen in Fig. 12) are capable of being moved toward and away from each other and are at the same time vertically adjustable.

In the construction seen in Figs. 3 and 13 the breast-beam 30 is constructed of a sleeve or hollow tube 55, of metal or other material, which is mounted on the rod 56, said sleeve having the outer covering 57, of rubber or similar material, whereby the necessary frictional contact between the skin 29 and said breast-beam is attained.

The operation is as follows: When the machine is assembled and the jaws are open, the knives 13 and 14 are below or separated from the roller 12, thereby producing a space through which the operator inserts the skin 29 to be staked, the remaining portion of said skin hanging over the breast-beam 30 and being held in position by the pressure of the operators body thereupon. The machine having been started, it will be seen that when the upper portion of the groove 24 coincides with the guide 11 and the crank-wheel is rotating in the direction indicated by the arrow in Fig. 2 the oscillatory frame 8, the vibratory cam-frame 23, and the lower jaw 15 will be in the positions seen in said Fig. 2 relatively to each other and will remain so until the crank-wheel 5 has advanced in its revolution, during which time the frames 8 and 23 and jaw 15 are moving away from the breast-beam 30, and the skin 29 is tightly held between the roller 12 and the knives l3 and 14, so as to impartthe required finish. When the crank-wheel 5 is completing the last portion of each revolution, the curved portion 25 of the guide 24 is brought in alinement with the guides 11 in the frame 8 by the rollers 10 and 26, it being apparent that this will cause the upper right-hand portion of the vibratory camframe 23 to lower or turn on its axis and move in the direction indicated by the arrow 0 in Fig. 6, thereby causing the knives 13 and 14 to likewise lower and release their bite on the skin 29 just before the return movement of said frames'S and 23. Then the frames 8 and 23 have completed their return movement, the several parts of the machine will be in the positions seen in Fig. 2, and the skin 29 is again caught between the roller 12 and knives 13 and 14, it being understood the said skin is shifted from time to time in order to present in succession all portions thereof to the roller 12 and knives l3 and 14 and the operation continued u ntil said skin 29 has been treated to the desired extent. Then the straight portion of the guide 24 in the cam-frame 23 is brought in alinement with the guides 11 in the frame 8 by the rollers 10 and 26,'the upper right-hand portion of the cam-frame 23 will be caused to rise or move in the direction indicated by the arrow e in Fig. 6, so as to bring the knives 13 and 14 against the skin 29 and press the latter toward the roller 12 prior to the backward movement of the frames 8 and 23. When it is desired to increase or diminish the normal pressure if in contact, or if not in contact the distance, between the roller 12 and the knives 13 and 14-in other words, to adjust the latter longitudinally on the shelf 23 so as to adapt said pressure or distance to the varying thicknesses of skins-the operator places his knee in the bifurcated portion 32 of the lever 21 and moves the latter in the direction indicated by the arrow f in Fig. 1, thereby bringing said lever in contact with the roller 20 and causing the same to rotate and impart motion to the shaft 19, worm 18, worm-wheel 17, shaft 16, and finally through the medium of the eccentric connections to the lower jaw 15 and the knives 13 and 14, secured thereto, it being noted that when the frame 8 is moving forward the roller when in contact with the lever 21 will cause the shaft 19 to rotate in the direction indicated by the arrow g in Figs. 2 and 8, thereby causing the jaw 15 to move in the desired direction. When the lever 21 is brought in contact with the roller 20 during the backward movement of the frame 8, the shaft 19 will be caused to rotate in an opposite direction and will thus actuate the lower jaw and the knives 13 and 14, the end 15 of said jaw resting on the shelf 23 at all times, as is evident. The oscillatory frame 8 is provided with steps 33 and 34 adapted to contact with stops 35 and 36 respectively, on the lever 21., so as to automatically throw the latter out of contact with the roller 20 at the completion of each forward and backward movement of the frame 8. During the process of staking the skins are partly supported on tables 37 secured to the frame 1.

Another embodiment of our invention is shown in Fig. 10, thelever 38 being fulcrumed, as at 39, to the frame 40 and adapted to engage the frame 41, fulcrumed, as at 42, to the frame 40, it being noted that by thisarrangement the roller 12 (seen in Fig. 2 and which may be secured to said lever 38) is caused to move toward the knives 13 and 14, (seen in Fig. 2,) which may be carried by the lower jaw 15, which latter may be mounted and adjusted in the machine in the same manner as described in connection with the lower jaw 15, (seen in Fig. 2,) the outer end of said jaw being supported upon the shelf 23 as before.

We desire to call especial attention to the function attained by pivoting the staking knife or blade in the manner seen in Fig. 11 or Fig. 12, the result being that we are enabled to adj ustthe angle or degree of inclination at which the knife acts upon the leather relative to the line of motion of said knife. We have found in practice that in many cases it is quite as necessary to change the inclination of the knife as its pressure or distance. Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a leather-staking machine, an upper and lower jaw, means for actuating the same, a staking device carried by one of said jaws,

a pluralityof staking-knives'supported uponv the other of said jaws, the outermost of said knives being mounted in advance of said staking device, and means for adjusting the angle of inclination of said outermost knife relative to said device.

2. In a leather-staking machine, an upper and lower jaw, means for actuating the same, a staking device carried by one of said jaws, staking-knives carried by the other of said jaws, one of said knives being pivotallysupported therefrom and mounted in advance of said staking device, and means for adjusting the inclination of the pivoted knife relative to said device and the other knife or knives.

3. In a leather-staking machine, a movable frame adapted to carry a staking device and having a slot therein, a crank-wheel having a wrist-pin adapted to actuate said frame, said pin engaging said slot and means for actuating said wheel.

4:. In a leather-staking machine, a movable frame adapted to carry a staking device, a cam-frame, a Wheel having a wrist-pin attached thereto and actuating said frames, and means for actuating said Wheel.

5. In a leather-staking machine, a movable frame adapted to carry a staking device and having a slot therein, a lower jaw also carrying a staking device, a Wheel having a wristpin engaging said slot whereby said frame and lower jaw are actuated, and means for actuating said wheel, in combination with mechanism for actuating said lower jaw.

6. In a leather-staking machine, a movable frame carrying a staking device, and means for actuating said frame and for causing an accelerated or quick return movement thereof.

7. In a leather-staking machine, an oscillatory frame carrying a staking device, a camframe, a lower jaw supported thereon and carrying a staking device, a crank-wheel carrying a wrist-pin adapted to actuate said frames, and means for imparting an accelerated return movement to said staking devices.

8. In a leatherstaking machine, an oscillatory frame, a cam-frame carried thereby, and staking devices carried by said frames, in combination with a crank-wheel'having a wrist-pin engaging said frames.

9. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby, and staking devices carried by said frames, in combination'with a crank-wheel having a wrist-pin engaging said frames and means for imparting a quick or accelerated return motion to said frames.

10. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby, said frames having opposing jaws, staking devices supported by the jaws of said frames, a crank-wheel having a wrist-pin engaging said frames and adjusting devices for one of said jaws.

11. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby and provided with an adjustable lower jaw, staking devices carried by said oscillatory frame and lower jaw, a crank-wheel having a wristpin engaging said framesand means for causing a quick or accelerated return movement of said staking devices.

12. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby and provided with an adjustable lower jaw, staking devices carried by said vibratory frame and lower jaw, a crank-pin engaging said frames and gearing for adjusting said lower jaw, said gearing being operated by a laterally-movable, knee-actuated device.

13. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby and provided with an adjustable lower jaw, staking devices carried by said oscillatory frame and lower jaw, gearing for adjusting said lower jaw, having a rotatable shaft provided with a roller, and a laterally-movable lever adapted to engage said roller, the free end of said lever terminating at the front of the machine.

14. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby and provided with an adjustable lower jaw, staking devices carried by said oscillatory frame and lower jaw, gearing for adjusting said lower jaw comprising a rotatable shaft provided with a roller, and a laterally-movable lever adapted to engage said roller, the free end of said lever terminating at the front of the machine, said lever and oscillatory frame being provided with engaging portions situated to coact at the termination of each throw of the oscillatory frame so as to move-said lever away from said roller.

15. In a leather-staking machine, an oscillatory frame, a cam-frame supported thereupon, staking devices carried by said oscillatory frame, a lower jaw carrying a staking device and supported upon said cam-frame, means for actuating said frames, eccentric devices for adjusting said lower jaw, gearing for operating said devices, a rod depending from said gearing and carrying a roller and a laterally-movable lever engaging said roller.

16.. In a leather-staking machine, an oscillatory frame, a cam-frame carried thereby, a lower staking-jaw supported on said camframe, a crank-pin engaging said frames, and laterally-movable knee-operated devices for adjusting said lower jaw.

17. In a leather-staking machine, a slotted oscillatory frame, a slotted cam-frame pivotally supported thereupon and located within said first-mentioned frame, staking devices carried by said frame and a crank -wheel having a wrist-pin engaging the slots in said frames.

18. In a leather-staking machine, an oscillatory frame fulcrumed at its lower portion, a cam-frame pivotally mounted on a shaft carried by the first-mentioned frame and having a shelf at its forward portion, a lower jaw supported on said shaft and resting on said shelf, means for adjusting said jaw and means for operating said frames.

19. In a leather-staking machine, an oscillatory frame, a cam-frame supported thereupon, a lower jaw supported upon said camframe, staking devices carried by said oscillatory frame andlower jaw, laterally-movable knee-operable devices for adjusting one of said jaws, means for causing a quick accelerated return movement of said staking devices and a crank-wheel having a crank-pin engaging said frames.

20. In aleather-staking machine, jaws carrying staking devices, eccentric devices for adjusting one of said jaws, a pinion for operating said eccentric devices, a shaft carrying a worm engaging said pinion, a roller on said shaft, means for rotating the latter and a laterally-movable lever adapted to contact with said roller, when it is desired to adjust said lower jaw.

21. In aleather-staking machine, a staking device, and means for imparting to the staking device a slower motion during its traverse over the leather to be treated than during its reverse or return motion.

22. In a leather-staking machine, an oscillatory frame, means for actuating the same, an upper jaw carrying a roll, a lower jaw carrying a plurality of staking-blades adapted to cooperate with said roll, means forimparting to each of said blades a horizontal and vertical adjustment independently of the other blade, means for imparting a comparatively slow movement to said roll and blades during their traverse over the leather to be treated, and means for imparting a relatively rapid or accelerated movement to said roll and blades during their movement in the opposite direction.

23. In a leather-staking machine, a movable frame, a cam-frame, a wheel having a wrist-pin attached thereto and actuating one of said frames,means for actuating said wheel, staking devices operated by said frames, and means for imparting to the staking devices a slower motion during their traverse over the leather to be treated, than during their reverse movement.

24. In a leather-staking machine, an upper and lower jaw, means for actuating the same, a staking device carried by one of said jaws, staking-knives supported upon the other of said jaws, and means for adjusting the inclination of one of said knives relative to said device, in combination with a spring forming a resilient abutment for the device upon which said knife is supported.

25. In a leather-staking machine, staking devices, means for imparting to one of said devices a slower motion during its traverse over the leather to be treated than during its reverse or return motion,and externally-movable knee-operable mechanism for adjusting the other of said devices.

26. In aleather-staking machine, a staking device, means for imparting a comparatively slow movement to said staking device during its traverse over the leather to be treated, and means for imparting a relatively rapid or accelerated movement to said staking device during its movement in the opposite direction.

27. In a staking-machine, the combination with a roll, of a blade having independent staking and pressure edges at one side of said roll.

28. In a staking-machine, a blade having a staking edge and an independent pressure edge in a difierent vertical and horizontal plane.

FRANK F. SLOCOMB. JAMES CRAIG.

l/Vitnesses:

WM. OANER WIEDERSHEIM, E. HAYWARD FAIRBANKS. 

